mirror of
https://github.com/chillerlan/php-qrcode.git
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smiley
70 lines
1.0 KiB
PHP
70 lines
1.0 KiB
PHP
<?php
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/**
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*
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* @filesource BitBuffer.php
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* @created 25.11.2015
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* @package codemasher\QRCode
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* @author Smiley <smiley@chillerlan.net>
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* @copyright 2015 Smiley
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* @license MIT
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*/
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namespace codemasher\QRCode;
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/**
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* Class BitBuffer
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*/
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class BitBuffer{
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/**
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* @var array
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*/
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public $buffer = [];
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/**
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* @var int
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*/
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public $length = 0;
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/**
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* @return string
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*/
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public function __toString(){
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$buffer = '';
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for($i = 0; $i < $this->length; $i++){
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$buffer .= (string)(int)(($this->buffer[(int)floor($i / 8)] >> (7 - $i % 8))&1) === 1;
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}
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return $buffer;
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}
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/**
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* @param $num
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* @param $length
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*/
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public function put($num, $length){
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for($i = 0; $i < $length; $i++){
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$this->putBit((($num >> ($length - $i - 1))&1) === 1);
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}
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}
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/**
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* @param $bit
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*/
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public function putBit($bit){
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$bufIndex = floor($this->length / 8);
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if(count($this->buffer) <= $bufIndex){
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$this->buffer[] = 0;
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}
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if($bit){
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$this->buffer[(int)$bufIndex] |= (0x80 >> ($this->length % 8));
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}
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$this->length++;
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}
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}
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